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Two-toned Pygmy Squid - Idiosepius pygmaeus
This Two-toned Pygmy Squid - Idiosepius pygmaeus are very small, usually around 1 cm or smaller although it is indicated in Wikipedia they can grow up to 2 cm. Probably the 2 cm size includes their extended tentacles.
In this picture, there are actually 2 of them, the one on the left is smaller in size and is trying to hide among the Crinoid. The bigger one is having a shrimp for a meal.
They are mostly seen during the early part of the night when they come out to hunt/feed.
Their tiny size makes them confused for juveniles/baby but that is not so.
''Idiosepius pygmaeus'', also known as the Two-toned Pygmy Squid, is a species of bobtail squid native to the Indo-Pacific. It occurs in waters of the South China Sea, Japan, Philippines, Palau, Indonesia, Northern Mariana Islands, as well as northern and northeastern Australia. It inhabits shallow, inshore waters.
''I. pygmaeus'' weighs 0.00033 g upon hatching and increases in weight to 0.175 g as it reaches maturity in 50 days . It inhabits waters at a temperature of 25.2°C. Growth.. more
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